Eft payment made but not allocated for store card payment

Good day

In order to make store card payments safe and convenient during the Covid-19 pandemic, customers were given simple bank payment options and I opted for eft payments using the account number provided ( ABSA: ***) using my card number as the reference as stipulated. I made a payment of R160 on 25 April 2020 but this payment doesn't not reflect in my current statement and it shows my account is in arrears! The money has left my account and I have the history of this payment, so I would like to know why my account is not up to date. I always pay more than I need to and will do so to keep a good credit score. I need for this problem to be resolved before I do my next payment. I can't reach your service centre due to the pandemic and am not sure how else to have this matter fixed.